Akzo Nobel Coatings International B.v.

Lyndsey Tyson

David Neil Williams

David Anthony Stark

Clayton Price

Alistair Andrew Finnie

Andrew Donoghue

The invention relates to a coating composition comprising a) seawater-hydrolyzable groups covalently linked to a polymer backbone, which seawater-hydrolyzable groups are capable of undergoing hydrolysis or ion-exchange when exposed to sea-water, rendering the polymer partially soluble or dispersible in seawater, and b) zwitterionic groups covalently linked to a polymer backbone wherein the polymer backbones to which the sea-water-hydrolyzable groups and the zwitterionic groups are attached serve as a film-forming binder in the coating composition, and wherein the molar ratio of the seawater-hydrolyzable groups a) to the zwitterionic groups b) is 0.1 or higher. The invention also relates to a method of providing a substrate with anti-fouling performance and to a coated substrate.

Coating composition for substrates immersed in water

The invention relates to a coating composition for use as a coating to prevent fouling in a marine environment, comprising: 

Foul preventing coating composition

The invention relates to a coating composition for use as a coating to prevent fouling in a marine environment, comprising: a) a curable polysiloxane polyoxyalkylene block copolymer; b) a catalyst of general formula (i) wherein each Ris independently a monovalent hydrocarbon group, each Ris independently selected from a hydrogen atom, a monovalent organic group, a siloxane group, or a silyl group of formula &#x2014;SiR, wherein each Ris independently a monovalent hydrocarbon group, and n is an integer having a value of 0 or greater, and optionally: c) a filler and/or pigment. 

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Newcastle upon Tyne, United Kingdom

Lyndsey Tyson